It's possible to point at each type of pointer Who tells me how many pointers to write in an array should be released when memory is released?
When you hand over an array to a function, you hand over the array and the size of the array You don't have to tell me the size of free Then can I make a function that automatically finds out the size of my function like free?
c sizeof free pointer
When the user calls malloc(), how much memory is allocated?
When you allocate memory, it's not just about the size that you set
Allocates (user-specified size + block size) to provide reliable access to memory.
When calling free, you do free with this added block size, so you don't have to specify the size of the array you want to cancel
Unfortunately, it seems difficult to define a function like free.
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